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    • 5. 发明申请
    • ACTIVITY MONITORING AND POLYMERIZATION PROCESS CONTROL
    • 活动监测和聚合过程控制
    • US20140058050A1
    • 2014-02-27
    • US13878255
    • 2011-09-23
    • Ursula TrachtRicarda LeiberichMichael BergerHanns-Ingolf PaulUdo Wiesner
    • Ursula TrachtRicarda LeiberichMichael BergerHanns-Ingolf PaulUdo Wiesner
    • C08F236/08
    • C08F236/08B01J19/0033B01J19/18B01J2219/00164B01J2219/00186B01J2219/00198B01J2219/00209B01J2219/00231C08F210/12C08F2400/02C08F2/00
    • The present invention relates to a method to control a liquid feed stream carried out by measuring at least one spectrum of the liquid feed stream comprising an initiator or catalyst, determining its activity using a predictive model on the basis of said spectrum and adjusting the feed streams and/or the preparation conditions of the feed stream comprising the initiators or catalysts in order to attain or maintain a desired level of total activity. In a further aspect the invention relates to a controlled process for the preparation of polymers in a polymerization reactor by contacting liquid feed streams comprising monomers and initiators or catalysts, whereby the control of the feed streams entering the polymerization reactor and/or the initiator or catalyst preparation is carried out by measuring at least one spectrum of the liquid feed stream comprising an initiator or catalyst, determining its activity using a predictive model on the basis of said spectrum and adjusting the feed streams and/or the preparation conditions of the feed stream comprising the initiators or catalysts in order to attain or maintain a desired level of total activity within the polymerization reactor. More particularly, the invention relates to a method for controlling the activity of aluminium containing initiators in a process for the co-polymerisation of isolefins and multiolefins, in particular isobutylene and isoprene. The present invention further to device and a chemical plant suitable to operate said process.
    • 本发明涉及一种控制液体进料流的方法,所述方法是通过测量包含引发剂或催化剂的至少一个光谱的液体进料物流,使用基于所述光谱的预测模型确定其活性并调节进料流 和/或包含引发剂或催化剂的进料流的制备条件以获得或保持期望的总活性水平。 在另一方面,本发明涉及通过使包含单体和引发剂或催化剂的液体进料流接触而在聚合反应器中制备聚合物的受控方法,由此控制进入聚合反应器和/或引发剂或催化剂的进料流 通过测量包含引发剂或催化剂的液体进料流的至少一个谱线,基于所述光谱使用预测模型确定其活性并调节进料流和/或进料流的制备条件来进行制备,所述进料流和/ 引发剂或催化剂,以获得或保持聚合反应器内所需的总活性水平。 更具体地说,本发明涉及在异烯烃和多烯烃,特别是异丁烯和异戊二烯的共聚合方法中控制含铝引发剂的活性的方法。 本发明还涉及适用于操作所述方法的装置和化学设备。
    • 7. 发明授权
    • Chromatographic method for high yield purification and viral inactivation of antibodies
    • 用于高产率纯化和病毒灭活抗体的色谱法
    • US06307028B1
    • 2001-10-23
    • US09270724
    • 1999-03-17
    • Wytold LebingPatricia AlredDouglas C. LeeHanns-Ingolf Paul
    • Wytold LebingPatricia AlredDouglas C. LeeHanns-Ingolf Paul
    • C07K136
    • A61L2/0088A61L2/18A61L2/23C07K16/065
    • An improved process for the purification of antibodies from human plasma or other sources is disclosed. The process involves suspension of the antibodies at pH 3.8 to 4.5 followed by addition of caprylic acid and a pH shift to pH 5.0 to 5.2. A precipitate of contaminating proteins, lipids and caprylate forms and is removed, while the majority of the antibodies remain in solution. Sodium caprylate is again added to a final concentration of not less than about 15 mM. This solution is incubated for 1 hour at 25° C. to effect viral inactivation. A precipitate (mainly caprylate) is removed and the clear solution is diluted with purified water to reduce ionic strength. Anion exchange chromatography using two different resins is utilized to obtain an exceptionally pure IgG with subclass distribution similar to the starting distribution. The method maximizes yield and produces a gamma globulin with greater than 99% purity. The resin columns used to obtain a high yield of IgG, retain IgM and IgA, respectively. IgA and IgM may be eluted in high yield and purity.
    • 公开了一种用于从人血浆或其他来源纯化抗体的改进方法。 该方法包括将抗体在pH 3.8至4.5下悬浮,然后加入辛酸,并将pH转变至pH5.5至5.2。 污染蛋白质,脂质和辛酸盐形式的沉淀物被除去,而大多数抗体保留在溶液中。 再加入辛酸钠,终浓度不低于约15mM。 将该溶液在25℃孵育1小时以进行病毒灭活。 除去沉淀物(主要是辛酸盐),并用净化水稀释澄清溶液以降低离子强度。 使用两种不同树脂的阴离子交换色谱法获得特异纯的IgG,其亚类分布类似于起始分布。 该方法使产量最大化,产生纯度高于99%的γ球蛋白。 用于获得高产量的IgG的树脂柱分别保留IgM和IgA。 可以以高产率和纯度洗脱IgA和IgM。